A note on air temperature and precipitation variability and extremes over Asmara: 1914‐2015

Fessehaye, Mussie; Brugnara, Yuri; Savage, Michael J; Brönnimann, Stefan (2019). A note on air temperature and precipitation variability and extremes over Asmara: 1914‐2015 (In Press). International journal of climatology Wiley 10.1002/joc.6134

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Meteorological series (daily precipitation, minimum and maximum air temperature) for Asmara (Eritrea) for the last hundred years (1914 – 2015) are analysed. The data were quality controlled and homogenized using publicly available data from surrounding countries as well as newly recovered data from twelve stations in Eritrea. Overall, the Asmara data showed a consistent pattern and there were no outliers outside of four standard deviations from the corresponding reference. Climate indices were calculated using the program RClimDex. Overall, eight indices for description of the air temperature data and ten for precipitation data were calculated. The analyses of averages and indices reveal large climatic variations in the central highlands of Eritrea. The results indicate significant changes in air temperature since 1943, with daily minimum and maximum air temperature increasing at a similar rate of 0.22 and 0.19 °C dec-1, respectively. The diurnal air temperature range shows a non-significant decreasing trend over the study period. No significant variation was found in the annual total and the seasonal precipitation over the last century. Significant trends were detected for some daily precipitation indices, although the lack of reference series prevents an evaluation of their reliability.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geography > Physical Geography > Unit Climatology
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Institute of Geography
08 Faculty of Science > Institute of Geography > Physical Geography
10 Strategic Research Centers > Centre for Development and Environment (CDE)

UniBE Contributor:

Brugnara, Yuri and Brönnimann, Stefan

Subjects:

900 History > 910 Geography & travel

ISSN:

0899-8418

Publisher:

Wiley

Language:

English

Submitter:

André Hürzeler

Date Deposited:

16 Jul 2019 16:18

Last Modified:

16 Jul 2019 16:18

Publisher DOI:

10.1002/joc.6134

Uncontrolled Keywords:

Climate extremes; climate variation; Eritrea; RClimDex

BORIS DOI:

10.7892/boris.130719

URI:

https://boris.unibe.ch/id/eprint/130719

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